Set-up: Begin by lying on your back on a cushioned surface. Place your arms angled at your sides and your elbows pointed into the ground.
Movement: Begin by contracting your back muscles and squeezing your shoulders together. Press your elbows into the cushioned floor to raise your torso slightly off the ground. Pause, and maintaining the contraction, return to the start position. If you have trouble getting your torso off the ground, that's ok, simply focus on the contraction.
Emphasis: All of the movement should come from the shoulder blades and in the arms. Do not push the head forward at the end of the movement.